Snyder wants Lt. Gov. Brian Calley on the ticket again. But Calley is facing a challenge from tea party activist Wes Nakagiri at Saturday's GOP convention in the Detroit suburb of Novi.

Some 2,100 delegates are eligible to attend.

Attorney General Bill Schuette and Secretary of State Ruth Johnson face no opposition to their nominations. Republicans have controlled state government for nearly four years and will look to unify heading into the final two months of the campaign.

Others expected to be nominated included state Supreme Court Justices David Viviano and Brian Zahra. There are contested races for the education board and university trustee boards.

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